Nipple-holding device.



R. J. MITCHELL.

NIPPLE HOLDING UEVCE.

APPLICATION FILED MAR. I?, I9I5.

Patented July 3, 19117.

mma ....2- ...zt :En- MILI u Munn".n nlnllnnuunuilualll|ll|ullnnulROBERT J'. MITCHELL, OF CENTRAL FALLS, RHODE ISLAND.

NIPPLE-HLDING DEVICE.

Application filed March 17, .1915.

To all whom t may concern:

e it known that I, ROBERT J. MITCHELL, a citizen of the United States,residing at Central Falls, in the county of Providence and State ofRhode Island, have invented certain new and useful Improvements inNipple-Holding Devices; and I do hereby declare the following to be afull, clear, and eXact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

he invention relates to a nipple holding device.

The object of the present invention is to provide a simple, practicaland inexpensive device of strong and durable construction adapted foruse either in a shop or while out 0n a job and capable of enabling smallpieces of pipe from one-quarter of an inch to siX inches in length to bereadily threaded without liability of jamming the threads.

A further object of the invention is to provide a nipple holding deviceadapted to be held in a square jaw vise or pipe vise and capable ofsecurely gripping a piece of pipe at the end edges thereof and ofenabling the pipe after threading to be released without putting a pipewrench on the nipple.

lVith these and other objects in view the invention consists in theconstruction and novel combination and arrangement of parts hereinafterfully described, illustrated in the accompanying drawings and pointedout in the claim hereto appended, it being understood that variouschanges in the form, proportion and minor details of construction may beresorted to without departing from the spirit or sacrificing any of theadvantages of the invention.

In the drawing Y Figure l is a longitudinal sectional view of a nippleholding device constructed in accordance with this invention,

Fig. 2 is a detail view of the relatively xed sleeve,

Fig. 3 is a transverse sectional view on the line 3 3 of Fig. l.

Like numerals of reference designate corresponding parts in all thegures in the c rawing.

In the accompanying drawing in which is illustrated the preferredembodiment of the invention, the nipple holding device comprises in itsconstruction, a rod l constructed of suitable metal and provided with areduced front portion 2 adapted to receive a Specication of LettersPatent.

` secured on the reduced rateatea Jurys, mit. Serial No. 14,960.

relatively xed sleeve 3 which is provided at its inner end edge with sawteeth 4L adapted to engage the forward or outer end of a short piece ofpipe or nipple 5. The relatively Xed sleeve 3 which is detachablyportion 2 of the bolt l by a nut 6 projects outwardly beyond thecircumference of the bolt and is of greater diameter than the same toengage the said pipe or nipple 5 which lits on the outer or frontportion of the bolt l as shown. The inner or rear end of the pipe ornipple 5 is engaged by the lfront or outer end of a reduced cylindricalportion 7 of a relatively ing the nipple holder in position forthreading the nipple or pipe 5. The inner or rear portion 9 of thesupporting sleeve 8 is preferably square and the reduced cylindricalportion 7 is provided at the front or outer end with saw teeth l0 whichengage the pipe or nipple 5 at the inner or rear end edge thereof. Bythis construction the pipe or nipple 5 is securely gripped at the endedges so that there is no liability of jamming or otherwise injuring thescrew threads and as the pipe or nipple is of greater thickness than thereduced portion 7 of the supporting sleeve 8 and projects beyond theface of the relatively Xed sleeve 3, the said pipe or nipple 5 isadapted to be threaded without the die coming in contact the nippleholding dereceives a nut l2 preferably of hexagonal form.

The threaded portion l1 is of suiiicient length to permit the relativeadjustment of the holding sleeve or supporting sleeve 8 and the bolt toengage short pieces of pipe of various lengths, say from three-quartersof an inch to siX inches and the nipple holder enables such short piecesof pipe which are usually consigned to the waste to be threaded and usedas nipples.

In the operation of the device the die stock is placed over thc outerportion of the nipple or pipe 5 by being passed over the sleeve 3 andwhen it is desired to remove the nipple or pipe 5 the nut 12 loosened.In arranging the nipple or pipe 5 on the rod l it is slipped thereonfrom the rear end of the said rod and the supporting sleeve 8 is thenplaced in position on the rod and the nut 12 screwed against the rearend of the squ'ar'e portion 9 whereby the nipple or pipe is securelyJfastened or held on the bolt and is iirinly maintained in positionWhile being threaded. y

The devi'ce may be made in various sizes to hold pipes or nipples oft'diiie're'nt dialneters.

What is olaiin'ed is:

A nipple-holding device comprising a rod for supporting a pipe having areduced screi'v threaded front portion, a relatively fixed sleevelocated on said reduced portion and of a greater diameter than the 'rodso as to project outwardly beyond the circumference of the rod to engagethe outer end of the pipe, teeth formed on the inner edge of the sleevefor engagement With the outer end of the pipe, a nut threaded to therecopies of this patent may be obtained for iive cents each, byaddressing the duced portion to force the teeth in the outer end of thepipe and to frictionally lock the sleeve against rotation, a secondsleeve located on the rod and or' a smaller diameter than the pipe,teeth formed on the outer edge of the second sleeve to engage the pipe,a square supporting sleeve formed on the sec- 'ond sleeve to be grippedby va vise, a nut threaded to the rod and engaging the sup-V portingsleeve for `forcing the teeth on the second sleeve to engage the pipeand cof operate with the first mentioned nut to lock the pipe againstrotation;

ln testimony whereof l aiiix my signature in presence of two Witnesses.

ROBERT J. MITCHELL.

lVitnesses:

JAMES S. Mi'roHELL, Y

SIMPSON MITCHELL.

Commissioner of Patents,

Washington, D. G.

